Birger isidor rydberg



Painted Apr. la, |899.

B. l. RYDBERG.

WRENCH.

(Applcltiqn led In'. 17, 1898.)

(No Model.)

WITNESSES:

bean respectively, on the shanks 2 'NiTnD STATES PATENT Gimme.

BIRGER ISIDOR RYDBERG, OF VESTANFORS, SWEDEN.

WRENCH.

SPECIFICATION forming part of Letters Patent N O. 623,337, dated April 18, 1 899.

Application filed March 17; 1898.

T0 @ZZ whom, 'it may concern.-

Beit known that I, BIRGER IsIDon RYD- BERG, a subject of the King of Sweden and Norway,resi ding at Westanfors, Sweden,have invented certain new and useful Improvements in Adjustable Nipper-Vrenches, of which the following is'a specication.

This invention relates j to the class of wrenches wherein the two jaws of the wrench have shanks or handles and are pivotally connected together like nippers or scissors and wherein one of the jaws is mounted to slide in the other and is operated by gear-teeth.

The object of the invention is partly to adapt the sliding jaw of the wrench for adjustment to nuts of different sizes. Other features of the invention will be hereinafter indicated,and the novel features thereof carefully defined in the claims. Y

In the accompanying drawings, Figure l is a sectional side elevation ot" the wrench, showing the jaws open. Fig. 2 is a similar view showing the jaws closed, and Fig. 3 is an edge view of the wrench as seen from the left in Fig. 2. Fig. 4is aside view of the head of the open wrench seen in Fig. l. Fig. 5 is a section through the rivet or stud pivotally connecting the shanks of the jaws. Fig. 6is a view illustrating the positions of the parts when the movable jaw is to be adjusted.

l is the fixed jaw, provided with a shank 2. The movable jaw 3 has a slide-rack 4 xed to it and projecting at right angles from its face,this slide-rack having aguideway formed in the cheeks of the jaw l, whereby the movable jaw is adapted to move up to and away from the fixed jaw in a straight line. On the lower edge or bottom of the slide-rack 4 are teeth 7, which gear with teeth 6 on the rounded end of an operating-shank 5, pivotally connected with the shank 2 by a stud or rivet 2n,

Afixed in the cheeks of the shank 2.

As herein shown, the shank 2 and the jaw :l thereon are formed of two substantially like sections placed face 'to face and secured together by rivets 2b, the Shanks 2 being thus formed trough-like, as seen at the bottom of jFig. 3, to receive the shank 5.

The shank 5 hastormed inits face,about the pivot-stur 2, an annular recess or groove 8, in which is a coil-spring 9, the ends of which and 5.

Serial No. 674,160. (No model.)

This spring tends to open the jaws of the Wrench.

In Figs. 1,2, and 6 the section is taken along.

teeth on the rack, so that it cannot pass the teeth 6.

When the shank 5is turned to the extreme position, (seen in Fig. 6,) the teeth 7 will be clear of the teeth 6 and the jaw 3 may be moved or adjusted so as to put the teeth into engagement or gearin a way to adapt the jaws to nuts of different sizes-that is to say, by

shifting the jaw 3 to the extent of one tooth t0 the right in Fig. l, for example, the jaws will tit a smaller nut. This adjustment is indicated in dotted lines in Fig. 1.

It will be noted also in Fig. 6 that when the shank 5 is turned to the position illustrated a shoulder 10 thereon is brought into position to take behind the stop-tooth 7, and when the parts are in this position and the jaw 3 held fast the teeth will come into gear properly to set the wrench-jaws for the smallersized nuts.

Vhen the jaws of the wrench have been brought together, as in Fig. 2, they may be held in this position by a hinged link ll on one of the shanks taking over the extremity l2 of the other' shank, as clearly shown.

Having thus described my invention, I claiml. In a Dipper-wrench, the combination with the fixed jaw l., its shank 2, and the operating-shank 5, pivotally connected to the shank 3 and having gear-teeth 6 on its end,of the movable jaw Shaving a slide-rack 4, mount-ed in a guidewayin the fixed jaw,said slide-rack having teeth 7 which gear normally with the teeth on the operating-shank, but which may be disengaged therefrom for adjustment of the movable jaw, as described, and havinga longer stop-tooth 7 at the end of the sliderack, to prevent the jaw 3 from becoming wholly detached from the Wrench, substanshoulder 10, which takes behind the long tlially as set forth. tooth 7 a when the Wrench is being adjusted, 2. In a nipper-Wreneh,the combination with substantially as and for the purposes set forth. the fixed jaw, its shank, and the movable jaw In Witness whereof I have hereunto signed 5 having a slide-rack mounted in a guideway my name in the presence of two subscribing 15 in the Xed jaw, said rack having teeth 7, and witnesses.

a longer terminal tooth 7, of the operatings BIRGER ISIDOR RYDBERG. 'shank 5, pivotaily connected to the shank of Vtnesses:

the fixed jaw and having' teeth 6, which nor- ERNST SVANQVIST,

ro mally engage the teeth 7, and having` also a TRITIOF LINDGREN. 

